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Idle problems on a 2005 Chevy Astro van

I was wondering where the Idle air control valve, mass air flow valves are on a 2005 chevy astro van, the van starts fine the first time you go to start it, but when you try to start it a second time it will start and then die out because it will not hold its idle, you can also hear a tapping noise at times coming from the engine, does anyone know what this might be if not for the IAC and MAF valves?

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6ya6ya
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Posted on Jan 02, 2017

  • 37 Answers

SOURCE: 98 Astro Van,when warm hesitating, stalling

WELL YOU CHANGED ALMOST EVERY THING EXCEPT IGNITION CONTROL MODULE........

Posted on Jun 27, 2009

  • 462 Answers

SOURCE: 2001 astro chevy van 4.3 engines need to set the timing

The distributor in that engine can only be installed in one position. The hold down is built onto the distributor meaning when it is installed and the engine runs the computer is responsible for the timing. The distributor will move a little but won't correct major timing errors.

Posted on Sep 13, 2009

  • 1 Answer

SOURCE: Timing on an astro van

No it can not it is run by the cars computer. If the distrubitor cap is on wrong than that can cause multiple misfire

Posted on Dec 02, 2009

wireguy212
  • 1627 Answers

SOURCE: where is the pcv valve located on a 2005 4.3 astro

It comes out of one of the valve covers,follow the large vacuum hose from the air box to it.

Posted on Dec 27, 2009

  • 1608 Answers

SOURCE: 2000 astro van won't start

What you have to do is check and see if you have fuel pressure.You have to remove the engine cover to check it.If you don`t have a pressure tester then remove the air cleaner hose to the engine and spray it with carb.cleaner or brake cleaner.If it starts for a few seconds then it is more than likely a fuel pump.If it does not start then you have to check for spark at the spark plugs.Make sure you check more than one plug.If no spark then you have to check the distributor cap and rotor.Make sure the rotor is good and cap also.Things that can cause no spark are the ignition module,coil,and cap and rotor.Hope this helps.Good luck.

Posted on Jan 29, 2010

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some are worn but seem to still hold a vacuum ???? could you explain
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